From: "Heiko Stübner" <heiko@sntech.de>
To: Kukjin Kim <kgene.kim@samsung.com>
Cc: mturquette@linaro.org, linux-arm-kernel@lists.infradead.org,
linux-samsung-soc@vger.kernel.org,
Thomas Abraham <thomas.abraham@linaro.org>,
Sylwester Nawrocki <sylvester.nawrocki@gmail.com>,
t.figa@samsung.com
Subject: [PATCH 1/4] clk: samsung: register clk_div_tables for divider clocks
Date: Tue, 12 Mar 2013 00:43:24 +0100 [thread overview]
Message-ID: <201303120043.24557.heiko@sntech.de> (raw)
In-Reply-To: <201303120042.09633.heiko@sntech.de>
On some Samsung platforms divider clocks only use specific divider combinations
like the armdiv on s3c2443 and s3c2416. For these usecases the generic divider
clock already provides the option of providing a lookup table mapping register
values to divider values.
Therefore add a new field to samsung_div_clock and if filled with a table,
use clk_register_divider_table instead of clk_register_divider to register
a divider clock
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
---
drivers/clk/samsung/clk.c | 14 +++++++++++---
drivers/clk/samsung/clk.h | 13 +++++++++----
2 files changed, 20 insertions(+), 7 deletions(-)
diff --git a/drivers/clk/samsung/clk.c b/drivers/clk/samsung/clk.c
index 91d12f3..d36cdd5 100644
--- a/drivers/clk/samsung/clk.c
+++ b/drivers/clk/samsung/clk.c
@@ -183,9 +183,17 @@ void __init samsung_clk_register_div(struct samsung_div_clock *list,
unsigned int idx, ret;
for (idx = 0; idx < nr_clk; idx++, list++) {
- clk = clk_register_divider(NULL, list->name, list->parent_name,
- list->flags, reg_base + list->offset, list->shift,
- list->width, list->div_flags, &lock);
+ if (list->table)
+ clk = clk_register_divider_table(NULL, list->name,
+ list->parent_name, list->flags,
+ reg_base + list->offset, list->shift,
+ list->width, list->div_flags,
+ list->table, &lock);
+ else
+ clk = clk_register_divider(NULL, list->name,
+ list->parent_name, list->flags,
+ reg_base + list->offset, list->shift,
+ list->width, list->div_flags, &lock);
if (IS_ERR(clk)) {
pr_err("%s: failed to register clock %s\n", __func__,
list->name);
diff --git a/drivers/clk/samsung/clk.h b/drivers/clk/samsung/clk.h
index 961192f..26a752b 100644
--- a/drivers/clk/samsung/clk.h
+++ b/drivers/clk/samsung/clk.h
@@ -150,9 +150,10 @@ struct samsung_div_clock {
u8 width;
u8 div_flags;
const char *alias;
+ struct clk_div_table *table;
};
-#define __DIV(_id, dname, cname, pname, o, s, w, f, df, a) \
+#define __DIV(_id, dname, cname, pname, o, s, w, f, df, a, t) \
{ \
.id = _id, \
.dev_name = dname, \
@@ -164,16 +165,20 @@ struct samsung_div_clock {
.width = w, \
.div_flags = df, \
.alias = a, \
+ .table = t, \
}
#define DIV(_id, cname, pname, o, s, w) \
- __DIV(_id, NULL, cname, pname, o, s, w, 0, 0, NULL)
+ __DIV(_id, NULL, cname, pname, o, s, w, 0, 0, NULL, NULL)
#define DIV_A(_id, cname, pname, o, s, w, a) \
- __DIV(_id, NULL, cname, pname, o, s, w, 0, 0, a)
+ __DIV(_id, NULL, cname, pname, o, s, w, 0, 0, a, NULL)
#define DIV_F(_id, cname, pname, o, s, w, f, df) \
- __DIV(_id, NULL, cname, pname, o, s, w, f, df, NULL)
+ __DIV(_id, NULL, cname, pname, o, s, w, f, df, NULL, NULL)
+
+#define DIV_T(_id, cname, pname, o, s, w, t) \
+ __DIV(_id, NULL, cname, pname, o, s, w, 0, 0, NULL, t)
/**
* struct samsung_gate_clock: information about gate clock
--
1.7.2.3
next prev parent reply other threads:[~2013-03-11 23:43 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-11 23:42 [PATCH 0/4] clk: samsung: small fixes and enhancements Heiko Stübner
2013-03-11 23:43 ` Heiko Stübner [this message]
2013-03-12 8:50 ` [PATCH 1/4] clk: samsung: register clk_div_tables for divider clocks Thomas Abraham
2013-03-11 23:44 ` [PATCH 2/4] clk: samsung: remove np check in clock init Heiko Stübner
2013-03-12 8:53 ` Thomas Abraham
2013-03-12 9:02 ` Heiko Stübner
2013-03-12 9:17 ` Heiko Stübner
2013-03-12 9:36 ` Thomas Abraham
2013-03-12 9:54 ` Heiko Stübner
2013-03-11 23:44 ` [PATCH 3/4] clk: samsung: always allocate the clk_table Heiko Stübner
2013-03-12 9:54 ` Thomas Abraham
2013-03-12 10:50 ` Heiko Stübner
2013-03-12 11:26 ` Thomas Abraham
2013-03-12 11:23 ` Sylwester Nawrocki
2013-03-12 11:46 ` Thomas Abraham
2013-03-12 13:48 ` Sylwester Nawrocki
2013-03-12 14:24 ` Thomas Abraham
2013-03-13 3:00 ` Alim Akhtar
2013-03-13 3:35 ` Sachin Kamat
2013-03-13 5:13 ` Kyungmin Park
2013-03-11 23:45 ` [PATCH 4/4] clk: samsung: add infrastructure to add separate aliases Heiko Stübner
2013-03-12 9:57 ` Thomas Abraham
2013-03-12 10:04 ` Heiko Stübner
2013-03-12 10:48 ` Thomas Abraham
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